coca-cola scam

I received an sms saying I won 95.000 & my number was chosen by coca-cola uk.I phoned the number 0218297134 & phola answerred.Was sent another sms from 0788624794 from JAmes Luma,that I deposit 1800 for insurance for my winning number C152.The Nedbank account which he gave me was TR Mangesi.current account 1008636487 which I deposited 1800 on the 9/06/2011.However no winnings came & was asked for 3000 the next day & I realised this was a scam & was cooned of 1800.How do I get Mtn & vodacom ,telkom to block & arrest these people & get my 1800 refunde by nedbank.They also smsed a bosnian number +3878245709654 to say i was registered by coke uk for my prize.Thankyou.I hope you can help me.071357296 / 0117602730.Nazeera Engar